Not going to install something that messes with the computer program
I hear ya on that and did wrestle with this point when deciding whether to install IGLA or not. I know Ravelco is more straight forward but did not like the idea of physically cutting wires. With the IGLA no wires were cut for the install and it's only a few connections where it ties into the existing wiring. I figured worst case if I had issues with the IGLA I would just have it removed.